Spark-plug tester



. @c&. 23 A923.

W. P. MOORE SPARK PLUG TESTER Filed March 27. 1922 @WLQUZ.

INVENTOR ATTOWMEY wimusa:

Patented Get. 23, 1923.

innate WILBER'I P. MOORE, OF VJOBLAND, WYOMING.

SPARK-PLUG 'rnsrnn.

Application filed March 27, 1922.

T all whom it may concern:

Be it known that I, VVILBERT P. Moons, a citizen of the United States,residing at \Vorland, in the county of \Vashakie and State of Wyoming,have invented new and useful Improvements in Spark-Plug Testers, ofwhich the following is a specification.

This invention relates to a device for testing the ignition circuit ofan internal combustion motor, the principal object of the inventionbeing to provide means on the spark plugs for short circuiting the sameto tell whether or not the electric system is in proper condition.

Another object of the invention is to attach the device to the plug insuch a manner that it can be moved into operative and inoperativeposition as required.

This invention also consists in certain other features of constructionand in the combination and arrangement 01" the sev eral parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a plan View of aplug constructed in accordance with my invention.

Figures 2 and 3 are detail views.

In these views 1 indicates a spark plug which may be made of any desiredtype and Serial No. 547,044.

2 indicates my device which is preferably of U-shape and formed ofspring metal, the legs engaging opposite sides of the shell of the plugand being pivotally secured thereto by means of the pivot points 3 onthe legs engaging recesses 4 on the plug.

This arrangement of parts will permit the device to extend at rightangles fromthe plug, when it will be in inoperative position, or topermit it to be swung towards the outer end of the plug so as to comeadjacent the electrode of the plug to short circuit the same, thusgiving a spark if the circuit is closed. If a spark does not occur thiswill be proof that something is wrong with the electric system.

By this invention it will be seen that the system can be easily andquickly tested without removing the plugs or applying tools thereto.

It is thought from the foregoing descrip tion that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes tall with in the scope of the appended claim.

What I claim is A device of the class described comprising a strip ofspring metal bent into U- shape and having pivot points punched. in itslegs for engaging recesses in the shell of a spark plug.

In testimony whereof I alilx my signature.

WILBEltT P. MOORE.

